(C) The oxidation reaction at the anode is: $H_2(g) \rightarrow 2H^+(aq) + 2e^-$. Number of moles of $H_2 = \frac{67.2 \ L}{22.4 \ L/mol} = 3 \ mol$.

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(C) The oxidation reaction at the anode is: $H_2(g) \rightarrow 2H^+(aq) + 2e^-$. Number of moles of $H_2 = \frac{67.2 \ L}{22.4 \ L/mol} = 3 \ mol$. Since $2 \ mol$ of electrons are produced per mole of $H_2$,total moles of electrons $(n)$ = $3 \times 2 = 6 \ mol$. Total charge $(Q)$ = $n \times F = 6 \times 96500 \ C = 579000 \ C$. Time $(t)$ = $15 \ min = 15 \times 60 \ s = 900 \ s$. Current $(I)$ = $\frac{Q}{t} = \frac{579000 \ C}{900 \ s} = 643.33 \ A$.

Class 12 Chemistry Electrochemistry Electrochemical cells

Medium

In a fuel cell,$H_2$ and $O_2$ react to produce electricity. In this process,$H_2$ gas is oxidized at the anode and $O_2$ gas is reduced at the cathode. If $67.2 \ L$ of $H_2$ gas at $\text{STP}$ is consumed in $15 \ min$,what is the current produced (in $A$)?

A
$64.33$
B
$6.433$
C
$643.33$
D
$38.6$

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Class 12

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Electrochemistry

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Electrochemical cells

$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

Medium

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Determine True $(T)$ or False $(F)$ :
$1.$ Life of Nickel-Cadmium cell is less than lead storage cell.
$2.$ Dry cell is secondary cell while nickel-cadmium cell is primary cell.
$3.$ Both dry cell and nickel-cadmium cells are primary cell.

Difficult

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Explain the symbolic representation of a galvanic cell (electrochemical cell) with a suitable example.

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State whether the following statements are True $(T)$ or False $(F)$ :
$1.$ Fuel cell is a kind of galvanic cell.
$2.$ Coal is used as fuel in fuel cell.

Medium

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The electrode reaction that takes place at the anode of a $CH_4-O_2$ fuel cell is?

Medium

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In a fuel cell,$H_2$ and $O_2$ react to produce electricity. In this process,$H_2$ gas is oxidized at the anode and $O_2$ gas is reduced at the cathode. If $67.2 \ L$ of $H_2$ gas at $\text{STP}$ is consumed in $15 \ min$,what is the current produced (in $A$)?

Similar Questions

$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

Determine True $(T)$ or False $(F)$ :$1.$ Life of Nickel-Cadmium cell is less than lead storage cell.$2.$ Dry cell is secondary cell while nickel-cadmium cell is primary cell.$3.$ Both dry cell and nickel-cadmium cells are primary cell.

Explain the symbolic representation of a galvanic cell (electrochemical cell) with a suitable example.

State whether the following statements are True $(T)$ or False $(F)$ :$1.$ Fuel cell is a kind of galvanic cell.$2.$ Coal is used as fuel in fuel cell.

The electrode reaction that takes place at the anode of a $CH_4-O_2$ fuel cell is?

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$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

Determine True $(T)$ or False $(F)$ :
$1.$ Life of Nickel-Cadmium cell is less than lead storage cell.
$2.$ Dry cell is secondary cell while nickel-cadmium cell is primary cell.
$3.$ Both dry cell and nickel-cadmium cells are primary cell.

State whether the following statements are True $(T)$ or False $(F)$ :
$1.$ Fuel cell is a kind of galvanic cell.
$2.$ Coal is used as fuel in fuel cell.